Gather-actuated controller for glass-blowing machines.



0. A. HANFORD.

GATHER AGTUATED CONTROLLER FOR GLASS BLOWING MACHINES.

APPLICATION FILED FEB. 17. 1912.

1 ,123 ,524 Patented Jan. 55;, u

4 SHEETS :1. ML

wuemimz O. A. HANFORD. GATHER ACTUATED CONTROLLER FOR GLASS BLOWING MACHINES.

APPLICATION FILED 113.17.1912v Patented Jan. 5, 1915.

4 SHEETS-SHEET 2.

Wane/am O. A. HANFORD. GATHER AOTUATED GONTROLLER FOR GLASS BLOWING MACHINES. APPLICATION FILED FEB17.1912. 1,12 94, Patented Jan. 5, 1915.

4 SHBETBBHBBT 8.

L/ m mmwmmw if umnmmmun a O. A. HANPORD.

GATHER ACTUATED CONTROLLER FOR GLASS BLOWING MACHINES.

APPLICATION FILED fEB,17,1912.

1,123,524. Patented Jan 5, 191.5.

'1 SHBETSSHEET 4.

MW i 1; Liming 1mm v vented certain new and useful 35 follow thereafter.

UNITED STATES PATENT OFFICE. I

can: A; rmmonn, or noonns'rna, new yonmassrcivoa 'ro EMPIRE MACHINE COMPANY, on PORTLAND, name, A CORPORATION ormnnm. Q

GATHER-ACTUATED CONTROLLER FOR GLASS-BEOWING MACHINES.

Specification of Lama-recent.

Patented Jan. 5, 1915.

a lication filed February 17, 1512. Serial no. mass].

To an whom it may concern:

Be it known that I, 0am citizen of the United States of America, and a resident of Rochester, New York have inimprovements in Gather-Actuated Controllers for Glass-Blowing Machines, of which the fol-- lowing is a specification.

-My invention, relates to certain improvements in glass blowing machines. whereby the molds are automatically closed upon the gather by mechanism controlled by the elongation of the gather. actuation of the mechanism in blowing and molding follows the positioning of the blowpipe vertically over the mold after an interval which is sufiicient to permit the I proper elongationof the gather, which interval for each gather varies with the condition thereof .as to mass, temperature, 'etc.

ing and molding, dependent not upon the ,presumed condition of the gather, but upon the actionof the particular gather being I handled at the time.

The controller is shown in this application in the form of a thermostatic contact maker which is heated by the gather upon its elongation and which controls through proper instrumentalities the closing of the mold and such operations of the machine as To secure the proper and desirable action of a machine having the general nature of the invention befbre described, numerous subsidiary features have been devised and the invention therefore consists vin the construction, arrange ment and combination of the several parts of which it is composed as will be hereinafter more fully described and claimed, although it is obvious that the broad invention may be embodied in different types of modifications thereof, which while embodying its principle of operation employ equivalent structures, as such changes will be ob vious to those skilled in the art and it is not to be understood that by said specific description of the means employed to produce A.. Haivroan a.

In it the automatic results s ecified the invention is restricted to the e'scribed instrumentalities. W hen the nvent on is. considered to reside in the specific means, specific claims will be. made thereto.

Referring to the. accompanying drawings in which corresponding parts are designated by correspondingmarks of reference: Figure 1 is a plan view of m automatic controller. Fig. 2, is a vertical lbngitudinal section therethrough .partly in elevation.- Fig. 3 is a horizontal sectional view of the electric ball valve. Fig, 4 is a front elevation,,partly. diagrammatic, of a blowing' ma-v chine to which in invention may be applied, its thermotic-device being removed for purpose of illustration. Fig. 5 is a side elevation partly in section of the same, showing the thermotic device in place and with the blow-pipe in vertical position. -Fig. 6 is a detail view ofv the clutch. Fig. 7 is a detailed view of the auxiliary three way 'or mold opening valve gearin In a prior application led October 27, Y

1909, Serial Number 524,994, I have shown a glass blowing machine, comprising a pivoted blow-pipe frame, molding and blowing mechanism, a marverer, a. motor and means driven by the motor whereby the blow-pipe frame, after the insertion of a blow-pipe therein, is swung on its pivot to avertical position with the gather end down into 00- connectionbetween the motor and frame being controlled by a clutch mechanism which is normally open, and is closed at the initiation of-tlie operations of the machine, is opened when the blow-pipe is positioned for elongation, is again closed at molding and is finally opened when the blow-pipe has been restored to normal position, and I have shown my present invention applied to a machine of this type, for the purpose of closing the clutch mechanism after the proper period of elongation, the specific form of machine represented in the accompanying drawings being that shown in an application of Vernon M. Dorsey, filed February 17, 1912. Serial No. 678,235.

As shown this machine comprises a suitable frame 1, on. which is mounted to oscillate in a vertical plane, a blow-pipe frame 3, the described movements of the latter in normal position, that is to s ay when the being due to the engagement existing between a gear- 12 thereon and rack segment 13, pivoted in the machine frame and oscillated by a cam track 1-1 in a.'disk'l5, the shrine of the cam being such that the rack segment" will beswung by therotation of the disk to give the clesired'movements to the blow-pipe frame. The cam disk is that when air is admitted to the aircyli central part of the cross headlies the for ward end of the lever 40, the rear end of which is pivoted in the main frame at 40 arid which rests upon the plunger 41 of t air cylinder 42, the arrangement being the plunger will be lifted, carrying up we cross head and closing the rnold. A'beve' ti driven from a drive shaft 8, through a lug &0 is formed upon the upper facet-i clutch 16, the latter comprising a toothed the lever in position to contact'with the a portion 16 fast on the shaft 8 in the rear pending arm 17 of the clutch actuating rock of the disk 15, and a second toothed portion shaft 17, the arrangement of these parts bee 16 sleeved 'on the shai'dti and feathered in therearwaidly projec ing tubular hub '15 of the disk and adapted to be engaged with the. portion 16 by a yoke lever formed by an arm 17 projecting from a rock shaft 17 extending transversely across the main frame near the front thereof, the shaft being adapted to be rocked to engage the clutch members by a foot lever-or pedal li extendtingi'downwardly and forwardly from one ing such that when the lever is raised to end thereof or by a crank arm 1? project-' sociatcd therewith, such -ai r. controlled ing downwardly from the central portion of means being actuated by a shaft23f, driven. i the rockshaft and actuated in the manner by beveled teeth 20" upon the gear 20, which {.954

to be hereinafter described. The clutch members are normally held disengaged by meansof-a spring ls'acting upon the yoke tion. of-the shaft 8, to be held in engagement for a predetermined angular movement by -means' of a pin 19 fixed to the intermedi ate bearing 1 of the shaft 8, which pin normally enters arecess or cutaway portion 19 on the back end of the movable member rotation'of the clutch member, whereby the comesdisengaged due't'o the recess 19 there parts will be held in engagement untila sec- 0nd recess 19" comes opposite the p1n,'pe'rmitting the spring 18- to disengage the is sleeved on the trunnion of the blow-pipe frame and is driven by the gear teeth 15 upon the disk 15. i

The mechanism above described provides means whereby a blow-pipe, when inserted as in the machine and the'clutch initially closed by the pressure of the feet of the operator, is swung on a horizontal-axis through a proper angular movement whereby the blow-pipe is oscillated to cause a movement of the gather and toposition vertically for elongation and molding; The action ini-, tiated by the'foot of the operator now ceases by reasrn of the fact that the uluthbe in, coming opposite the pin 19.: For the pin: pose of causing the subsequent a'ctic'n the machine to be automatic however and,

clutch members. Upon the members 'being to follow without hiiman interphsitinni. again engaged by the yoke levertheywill provide means by which the mold-will be inthe 'same manner he held in-engagement closed andrsuch subseqi'ientaction of t'h until the first recess .19 again comes oppomachine ma be cariiedout asma-yibe n'eces site the pin, when'the clutch memberswill to complete the molding, sitclrmea'ris again be disengaged. .As before stated the heingfinot dependent upon the settihgor tiu1- recess 19. is so situated'in respect to? the pin that the latter-enters it when the parts are disk 15 is so situated that the blow-pipe frame is horizontal, while the recess 19* is so situated in respe'bt' tothe recessjl9' as to be engaged byth'e pin 19 when the disk is- 'conditions by. which it:

' so situatedthat the stud roller on the rack segment is in such'portion-ofthe cam run thereof that the blow-pipe frame is vert cal.

To the base of the machine and in font elongation of the gatl'io i, Inasmuch ingof'any parts but coming intoi'actio' automatically at a time dependent np'er' period of elongationvaries due to of the gather, the teni'peratureofthe frop fiwhich it is madev and they atr'nkisp i, ab e f nr manipu-latipn, it.- isdillioiil tfin fine Wot a predetermine the interyalwhich should hey-1 application such automatic mold closing means, comprising a thermal mechanism which admits air to the mold closing cylinder 42 and by lifting the lever 40 reengages'the clutch by which the air for blow- .mg is controlled and the machine brought into operation to complete its cycle of mo tion, is shown in detail in Figs. 1 to 3. This mechanism "is as follows: A tube 43 contains mercury, the forward end of the tube being enlarged into a bulb 43 and blackened' to increase its sensitiveness while its 1 points 44",

and projecting within the bore of the tube rear end is bent upwardly and receives a cap 44 in which are mounted two contact 44 insulated from each other slightly above the normal level of the mercury containedtherein. The tube 43 is carriedsin a sliding head 45 mounted upon a bracket 46 from the front side of the mold tank,37 and when such sliding frame is thrown rearwardly the bulb of the thermal tube thereon lies in or adjacent to the path of the descending gather. In the forward end of the bracket 13 contained an air valve 47 comprising a valve chamber 47, inlet and outlet ports 47 and 47 and a ball valve 47 for the latter, The two poles 48 of an electro-mag'net 48 project into the valve chamber above the ball valve, the said inngnot being energized by coils 50. As shown diagrammatically in Fig. 1 and in Fig. 2 the main circuit of these coils comprises a suitable source 51, the wire 51, the points 44", 4-4, the wire 51*, the coils 50 of the magnet 48 and the wire 51 connecting the coils and the source of current. If desired an indicating device, such as a lamp 51, may be inserted within the circuit for the purpose of making a visual indication of the closing of the circuit. The outlet port 47 communicates with the central bore 52 of the tubular piston rod 52 rigidly mounted in the bracket 46, the rear end of which piston has a communication through the port 5'2 with the forward side of the piston head 52, which latter is contained within a cylinder 53 forming part of the sliding head 45 and having a closed forward end 53. The sliding head 45 is provided with two adjustable striking pins 54 which actuate the arm 55. of the main air valve 55, interposed in the pipe 55 between a source of air under pressure (not shown) and the mold closin cylinder 42." With this construction it wilFbe se n that the gather in its elo'nga tion will by radiation. heat the bulb 43 upon the forward end of the tube' tfl and cause the expansion of the contents thereof to close the gap between the points 44 and 44:. whereby current will flow through the windlugs 50. energizing theclectro-nuignet and lifting the ball valve from its seat. whereby air under pressure will be admitted from a suitable source through the outlet port lift the lever 40 and rei ngage the clutch.

inasmuch as it is desirable that the thermal closer be very sensitive and as under these conditions it is possible that the cooling of the mercury will take place so rapidly as to again break the circuit before the sliding head has completed its forward movement it is advisable to rovide means wherel'ly the movement of t e head when initiatedby the expansion of the mercury will be completed independently of the subsequent cooling thereof. This is accomplished by placing upon the coils of the magnets a second winding 56 included in a normally closed circuit, the magnetization due to the current flowing thcrethrough being insutlicient however to lift the ball from its seat, but being suilicient to maintain it raised after it is lifted by the stronger field created by the windings 50. This normally closed circuit is shown diagrammatically in Fig. 1 as comprising the conductors 56 and 56" connecting the windings 56 with the source 51, a cutout 57 being inserted in one 56) of the said conductors. This cutout coniprisesa spring pressed normally closed contact part 57 which has a portion extending into the path of the projection 57 on the sliding head 45, so that as the head completes its forward motion the anailiary circuit through the winding 56 will be broken and the ball valve 47 be allowed to drop. The forward motion of the sliding head above described removes the bulb from proximity to the descending gather and permits the cooling of'the mercury in the tube, which may benided by a nozzle 58, shown diagrammatically in Fig. 2, from which a current of cooling air may be di rected upon the bulb when the latter is in its forward position.

The reengagement 'of the clutch, due to the lifting of the plunger 41, causes the disk 15 to again start its rotation for the purpose of admitting blowin air during the molding, and to siilisequent v move the blowpipeeupporting frame back to normal position, but the mold must be opened before the frame is moved. For the purpose of c iecting this opening of the mold a three way valve 59 is inserted in the air pipe 55" between the main valve 55 and the mold closing cylinder 42. This mechanism is shown in detail in Fig. 7 and the arrange ment thereof such that the val e normally lemon the pipe 55* unobstructed, but such valve is actuated by the rotation of the disk 53 to shove the Y of lilic mold, to obstruct a relief valve for the uuwlianlsiu. lino 1 Jill valve mold closing valve while iliiec 1i so acts as a mold opening 'ljli inovu .11? of the. three Way is accmnpiiahcd, by gearing the stem 9 lhcreol viii; a pivoted saga'ienl; 6i). the connected in the lower end thus act.-

Uf V/i'ii oi a push pin 6 Mile upper end of which is in iirorvimity to the main disk 15, which is provided with a. am lug '31, adapted at a proper time to depress the said pin and to thus move the three way valve to obstruct the pipe in the manner before described. The pos tion of lhe cam track (ll upon the disk determines the time ins mold is opened, Lila rotation of lhe disk after the main valve ha; l'iscu closed lyv she mechanism to he homiuaitcr described. permitting the valve armada spriu '61) to rosloic the three war h o to it position in which the pipe i ir'larerl m "uninterrupted communicalion will the interior of the mold closing cylinder The molds are opcnco by their rs glit and ii arv the parts may he weigh-fad to insure their prompt action.

For the poi-pogo of restoring the thermal tulic 4-3 to its normal position and in proximilv lo the path of the d vending gather 'i locaiwi upon the front. of (he i !:ion in conta t during v c c of the disk with one arm 8;) of a hell crank lever pivolod in the main iii? arm 6?) of which lever is manner d n a link G l with the lJQll crank l al. the laasc of the frame I. through 'i motion i.; imparloil to il'ic forwardly ai ing ll'ihi 65* to lock the rock shaft. 06, last mined zai'i carrying a tappet arm I ;,:ro I-rli0u 36" upon a l i"? m LlH'UW l'lir latter reardiv. i' in provide variation in l rurtn of Him a vi.gv-plmwmal tell crank o'zcclmur-m vial-will ilic crank arms ll? :zuo' inr so shaft 3- is em /loved. ii"; of he sliding bead of the main air valve Pi and thus all pal a. the automatic conw llar rcstmwl lo normal position.

.lta pcraii n of flu device here shown the \vrrlouan having; placed a blow-pipe with a gathcr of i.l1lh?ll in the blow-pipe 'iainc. Whil his laiioi. in h rizontal po- "in .1 ilk: guula. 17*. thus cll'ecting -rgcnmnl f ills clutmh and causng the iniiial mrve'ucut. of the main disk 15. which llllillgll in: com irac: (sciliaves {he blow- 3pc. frame in is; pivrt to po ition the h w-pipc vorticalif:and in cocp'wurivc relaiizn ill; liar. amid and nm'iiaand 1711s re rward in also cliccls the clo hi no:

driven thereby n'iovemcnt and r gation of ills ga close proxin z'ty device to cause temporarily cease their cmain at rest until the elonther brings it in sufficiently to the bulb of the thermal an exsansion of the merthe electric valve to the cylinder to drive the latl:

hull) of the thermal device of the gather mold closes.

and air will be admitted of the sliding frame or forwardly, removing tho out of who path and the path in which the This movement of the sliding frame also (1)8118 the main valve 55 of the pipe 55 to the plunger of which is driven mg the lever 40 39 to close the mold.

mold closing cylinder, the

u )wardly, liftand with it time cross head The lifting of the lever as hefore described results in a rek ngagcnient of the clutch l8 and a restarting ol' the main disk 15.

the

whereby ail is This latter results in proper actuation of the air head 23,

admitted to the interior of the gather to expand Lhc same within the anti lucid. No imparted to too cu is al this time however olmv-pipe frame by reason of the fact that the stud of the actuating segment is still within a concentric molding run of the main disk but before such stud leaves such I? said disk aclu auxiliary three mold closing cylinder pressure in the ting the plunger to The continued movement of the to open.

the cam track (51 upon the cs the push pin 60 of the way relief valve 59 of the and relieves the air interior thereof, permitdescend and. the molds main disk than through the segment swings Z'lie blow-pl n- Durixuzj this on lranio to normal position. of the blow-pipe frame to normal position l hc pin 62 upon the main dish an d

aclnialics ll 53" and 11h rasetling bell crank 63" raws the sliding frame 45 rearwardly, closing the main air valve 55 to the mold vclosing cylinder and subsequent thereto the cam. track 61 upon the mam disk 15 passes from three way valve the latter to rest rial {)(i'sltlflk in ncrtc l with the dcr. When the incl; to its init' oil the push pin 60 of the and permits the spring of ore the said valve to it nor- 'lllCll the air sour-r 2: 1:1;- inlcrior of the said cylin blow-pipe frame is swung iai position the clutch is a sccrnd time disengaged by the first recess 15, thereof ccm and the main div are again scopped.

ing cpprsil-e to the pin l9 sk and parts driven tlmlelvy The blow-pipe with the finished bulb thereon may now be removed from the frame fresh gather ins and a blow-pipe with a ertcd therein.

I do not in this appliiation broadly claim a (l 23ml i233. gratun or the an non glass him actuated by the heat or elontlie-r i r putiing into operang molding mechanisms as claims are mad" thereto in my other ap- Flicatioa, serially numbered (50123;. filed an. (3, 1911, as a, (ll\'lSl(TIl of my aforesaid application serially numbered 52l99'1, and the claims of this application are stricted to include automatic means for closing a'mold, I do not, by failure to make herein claims not including, automatic mold closing means, abandon the same, as such claims are reserved for my prior application, Serial Number 524,994 before recited.

Having thus described my invention what I claim is1-- l. in a mold, closing device for glass working machines, the combination with a SQIHlltlblO mold, of means for closing the mold, means for supporting a body of glass for elongation above the mold and a thermotic element actuated by the heat 01 the bodv of glass and controlling the operation of the mold closing means. I

2. In a mold closing device. for glass working machines, the: combination with a separable mold, of mold closing mechanism therefor, means for snpportii'ig a body of glass for elongation above the mold, an

electric circuit, a thermotic contact maker actuated by the beat of the body of glass and coi jrrnlling the circuit and a valve controlled by the. circuit containing the contact maker for governing the operation of the mold closing mechanism.

In a mo d closing device for glass molding Fillz'fillihfif', the combination Witl a separable mold, of a fluid controlled mold closing mechanism, a t ermotic contact nial' r comprising me my column adaptto be ei'tnanded by the heat of a gall-er on the elongation thereof, contacts. and a valve having magnets governed by the passage of current through the contact and controlling the application of fluid, to the mold closing mechanism.

4.1m a mold closing device for glass working machines, tho combination with a separable mold, of mold closing mechanism, means for supporting a body of glass for elongation above the mold, a thermotic contact maker actuated by the heat of the body of glass and a circuit. controlled thereby determining the operation of the mold. closing mechanism.

In a mold closing mechanism for glass molding machines, the combination with av separable mold, of mold closing mechanism therefor, a ,movable tliermotic element. means for retracting the said element from proximity to a descending other and for determining the operation 0 the mold clos' same has been ens-a a li 7 it! 7', ln a nailll v zntinsi' uciii molding mar ilic combiiiaii m a st'parable mold, moans for 4 l l'or ictravl ng tiergather actnati'il minim i,

centrollc f om pioximity to in; all: f the active: and nicanrz for aulomai'ically reopen? he mold and inming lie gather a: nll tl moan: back to normal position.

8. In a glass blowing machine, the com bination with a blzgm pipc. of a separable mold, movable meant: located adiacent to and controlled by the elongation oi" a gather on the lilowpim; "or closingthe mold thereon and for n-tra ting: the fluid incana.

in an automatic mold ell 'vig device for the elonr ation oi a gather, the cmnlrnm tion with a wnarable mold, oi an air Bylindcr clos ng the; and m -;l, a movable frame, a fluid pressnre operating alan ne and u valve controlling the name for actuating the frame, a they-lactic Lube mounted in the mid frame and containing expansible con ducting materials, a magnetic port closing part and an oloctomagnct. an elven-i cult including the IlSllllQ; :ondn -t matcri: l and a Wimling on the said magma-t, a second electric circuit comprising); a con tact opened by the rnm'nmcnl' of the irame, a contact maker and a winding: on the electric magnet for maintaining the port clos ing part in its open position, an air tt lifi(?(ttion controlled by the valve 'l'nr i'fi l 'lli;l the frame to retract the lhorn'iotic who from proximitv to the gather, air connectioni-t to the mold closing cylindcr and a val e there in opened by the retraction o: lire frame and meangj'or milwnucnil ing the said frame o its initial positi n,

In tcalimony law: l' l have: he mf'o signed my name in the presence of lwo Witnesses, V

GRIN 7A.. HAN'FORU ln prcsmco of Zom B. SAUNDERS, G. K. Smswmn.

;glaas molding ma hines: controlled by 

